1. Agee OF, Kaude J, Lepasoon J (1973) Preoperative localization of pheochromocytoma. Acta Radiol Diagn 14: 545–560
2. Allen EV, Bannon WG, Upson M Jr, Huizenga KA, Bastron JA, Waugh JM (1951) A new sympatholytic and adrenalytic drug. Clinical studies on pheochromocytoma and essential hypertension. Trans Assoc Am Physicians 64: 109–121
3. Armstrong, MD, McMillan A, Shaw NF (1957) 3-Methoxy-4-hydroxy-D-mandelic acid, a urinary metabolite of norepinephrine. Biochem Biophys Acta 25: 422–423
4. Axelrod, J, Weinshilboum R (1972) Catecholamines. N Engl J Med 287: 237–242
5. Ayala LA, Egdahl RH (1973) Management of pheochromocytoma: An overview of current diagnosis and treatment. Proc Natl Cancer Inst 7: 529–535